/Engine/Source/Runtime/SignalProcessing/Public/DSP/FFTAlgorithm.h
EFFTScaling describes how transformed data is scaled.IFFTAlgorithmimplementations must return this value to describe how to achieve equal energy between input data and transformed data. It is assumed that applying the logical inverse of the scaling will produce equal energy.
namespace Audio { enum EFFTScaling { None, MultipliedByFFTSize, MultipliedBySqrtFFTSize, DividedByFFTSize, DividedBySqrtFFTSize, } }